National Council of Teachers of Mathematics
Ntcm: Math Challenge: Perplexing Percentages
Test your bargin shopping skills by figuring out which discount offers the greatest savings. A one page activity from the NCTM Math Challenges for Families series that focuses on understanding and calculating percentages. Connections...
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Percents Are Ratios
This Math Page tutorial explains how percents are ratios and then features a practice exercise.
Utah Education Network
Uen: Design Your Own Bedroom
Many students dream of designing their ideal bedroom. In this exercise, students will be required to limit their designs by size (as a specific volume) and price (a specific amount). They must design the floor plan, including furniture...
NumberNut
Number Nut: Division
An introduction to the concept of division, with an explanation of how it relates to fractions and decimal numbers. Includes links to practice activities.